<case value="multilayer_select">
    <div class="form-group item_{$field.name} {$field.extra_class}"> 
        <label class="col-md-3 control-label">{$field.title|htmlspecialchars}：</label>
        <div class="col-md-9">
            <select name="{$field.name}" class="form-control" {$field.extra_attr}>
                <foreach name="field.options" item="option" key="option_key">
                
                    <php>if(is_array($option)):</php>
                        <option value="{$option.id}" <eq name="field.value" value="$option.id"> selected</eq>>
                            {$option.title_show}
                        </option>
                    <php>else:</php>
                        <option value="{$option.id}" <eq name="field.value" value="$option.id"> selected</eq>>{$option}</option>
                    <php>endif;</php>
                </foreach>
            </select>
 			<span class="material-input"></span>	
        </div>
    </div>
</case>